*#3110# for checking the phone’s software (SW) – called firmware revision information.
*#746025625# [*#sim0clock#] to check if the Sim-Clock can be Stopped
(Sim-clock-stop is a kind of standby mode which will save battery time)

*#92702689# [*#war0anty#] Phone asks ‘warranty code:’

Press the following warranty code:

6232 (OK) : Displays the Month and Year of Manufacture (0997)
7332 (OK) : Displays the date of the last repair – if found (‘DATE NOT SAVED’…)
7832 (OK) : Displays (if found) the date where the phone was purchased (‘DATE NOT SAVED’…)
9268 (OK) : Displays Serial Number
37832 (OK) : Set the Purchasing Date MMYY (Warning: You can only do this once – So be careful …)
87267 (OK) : Transfers ALL phone numbers, pictures, sounds from one phone to another
(e.g. if broken) with 6110 u can transfer all data via IRport. (Confirm Transfer?)

‘Fast silent mode’.
In the newer versions (v.7.11->) a quick silent mode can by entered.
Press Menu then #.

The 54# Tip:
Type 1#, 2#……..54# on the keypad (when you’re not in the menu) to get the phone number used for with this key when speed dialing.

Enhanced Full Rate will give you much better sound quality when you enable it. The new Enhanced Full Rate CODEC adopted by GSM uses the ASELP (AlgebraicCode Excitation Linear Prediction) compression technology. This technology allows for much great voice quality in the same number of bits as the older Full Rate CODEC. The older technology was called LPC-RPE (Linear Prediction Coding with Regular Pulse Excitation). Both operate at 13 kilobits.(but you take up more space on the network, so they can charge you more) – Talk-time is reduced with about 5%

Half Rate will give you bad soundquality, which gives the serviceprovider the opportunity to have more calls on the network, and you might get a lower charge from them. – Will give you 30% longer talk-time.

Sim Clock Stop : *#746025625# apparently only works for 3 minuts.

*#92702689# – takes you to a secret menu with 6 choices
1) shows the serial nr.
2) shows when the cel phone was made mmyy
3) shows when the the cel. phone was purchased mmyy
4) shows how many times the cel. phone has been repaired.
5) makes u capebel of transferring user data if u have the gear for it
6) shows how many houres the phone has been on

*3001#12345# (TDMA phones only)
This will put your phone into programming mode, and you’ll be presented with the programming menu.2) Select “NAM1”
3) Select “PSID/RSID”
4) Select “P/RSID 1”
Note: Any of the P/RSIDs will work
5) Select “System Type” and set it to Private
6) Select “PSID/RSID” and set it to 1
7) Select “Connected System ID”
Note: Enter your System ID for Cantel, which is 16401 or 16423. If you don’t know yours, ask your local dealer for it.
8) Select “Alpha Tag”
9) Enter a new tag, then press OK
10) Select “Operator Code (SOC)” and set it to 2050
11) Select “Country Code” and set it to 302 for Canada, and 310 for the US. Ask on the forum for any other codes.
12) Power down the phone and power it back on again

ISDN Code
To check the ISDN number on your nokia use this code *#92772689#